Zvex Box of Rock Vexter Series Keyboard Synths lfo or sequencer you produce

lfo or sequencer you produce even more complex results

The Prometheus is hand made in Dundee Oregon with high quality components

Two levels of overdrive- for distorted rhythm and a second mode for sustaining and thickening lead work

All new hi-quality effects

Step recording mode

Zvex Box of Rock Vexter Series Keyboard Synths lfo or sequencer you produceThe Box of Rock (TM) is Z. Vex Effect's first "distortion" pedal, highly specialized to simulate the "everything on 10" sound of a classic Marshall JTM45 non master volume amplifier. You may use the Box of Rock effectively with many different amplifiers, but to get the sound I heard when I designed it, try it through a Marshall at least once. You may use your guitar's volume control to adjust for the exact amount of distortion you need, all the way